/*
 * Copyright 2023-2085 xujin <ceo@itgrail.com>
 *
 * Licensed under the Grail License, Version 1.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://itgrail.com/docs?id=3&catalogId=87
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.itgrail.pilot.app.command;


import com.google.common.base.Preconditions;
import com.itgrail.pilot.app.command.cmo.DeleteMenuCmd;
import com.itgrail.pilot.domain.user.entity.MenuE;
import com.itgrail.pilot.domain.user.service.MenuService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.collections.CollectionUtils;
import org.springframework.beans.factory.annotation.Autowired;
import com.itgrail.grail.cqrs.annotation.CmdHandler;
import com.itgrail.grail.cqrs.command.CommandExecutorI;
import com.itgrail.grail.dto.ResultData;
import com.itgrail.grail.exception.BusinessException;

import java.util.List;

@Slf4j
@CmdHandler
public class DeleteMenuCmdExe implements CommandExecutorI<ResultData, DeleteMenuCmd> {

    @Autowired
    private MenuService menuService;

    @Override
    public ResultData execute(DeleteMenuCmd cmd) {
        check(cmd);

        MenuE menuE = menuService.findMenuById(cmd.getId());
        if (menuE == null) {
            throw new BusinessException("400", "该Menu不存在");
        }

        if (menuE.getParentId() != null) {
            List<MenuE> menuEList = menuService.findMenusByParentId(menuE.getId());
            if (CollectionUtils.isNotEmpty(menuEList)) {
                throw new BusinessException("400", "该菜单包含子菜单，不能删除！");
            }
        }
        menuService.deleteMenu(cmd.getId());
        return ResultData.success(true);
    }

    protected void check(DeleteMenuCmd cmd) {
        Preconditions.checkArgument(cmd != null, "cmd不能为null");
        Preconditions.checkArgument(cmd.getId() != null, "menu id不能为null");
    }

}
